The mid-latitude Hefei city between the Yangtze and Huaihe Rivers has cold winter, hot summer, moderate spring and autumn, characteristic of the humid subtropical monsoon climate for a transitional belt between the warm-temperate to subtropical zones.

Hefei's climate is featured by the four distinct seasons, mild temperature, adequate precipitation, volatile spring temperatures, clear and crisp autumn, distinct rainy season, and concentrated precipitation in summer. Active movement of the cold and warm air in spring is the answer to the alternating sunny and rainy, cold and warm weathers. Summer is the longest season and is marked by high temperatures, intense precipitation often concentrated in the rainy season from May to June. Autumn is the shortest season and distinguishes itself with the rapid fall in temperature and fine weathers. In winter it is cold but mostly sunny, with rare rain and snow.

Pressure

monthly mean atmospheric pressure

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Pressure(hPa)

10229

10205

10164

10105

10062

10015

9996

10018

10092

10158

10204

10231

Pressure (hPa)

10229

10205

10164

10105

10062

10015

9996

10018

10092

10158

10204

10231

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

fig.1 monthly mean pressure

Temperature

monthly mean temperature

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Temp(oF)

36.6

40.1

48.5

60.6

70.3

77

82.5

81.6

73.2

62.9

51.2

41

Temp(oC)

2.6

4.5

9.2

15.9

21.3

25

28.1

27.6

22.9

17.2

10.7

5

Temperature (oC|oF)

2.6 oC 36.6 oF

4.5 oC 40.1 oF

9.2 oC 48.5 oF

15.9 oC 60.6 oF

21.3 oC 70.3 oF

25 oC 77 oF

28.1 oC 82.5 oF

27.6 oC 81.6 oF

22.9 oC 73.2 oF

17.2 oC 62.9 oF

10.7 oC 51.2 oF

5 oC 41 oF

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

fig.2 monthly mean temperature

monthly extreme mean temperature

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Min Temp(oF)

31.1

34.1

42

53.4

62.7

70.5

76.6

75.5

66.7

55.9

44

34.3

Min Temp (oC)

-.5

1.2

5.6

11.9

17.1

21.4

24.8

24.2

19.3

13.3

6.7

1.3

Max Temp (oF)

44.2

47.6

56.3

69.2

78.6

84.2

89.6

89.4

81.1

71.7

60

49.4

Max Temp(oC)

6.8

8.7

13.5

20.7

25.9

29

32

31.9

27.3

22.1

15.6

9.7

monthly extreme daily temperature

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Min Temp(oF)

10

14.1

26.2

32.7

47.3

53.9

64.4

62.6

51.4

35.2

22.8

7.7

Min Temp (oC)

-12.2

-9.9

-3.2

.4

8.5

12.2

18

17

10.8

1.8

-5.1

-13.5

Max Temp (oF)

68.3

79.5

85.6

90.8

96.2

100

102.3

102

101.4

93.7

84.7

72.5

Max Temp (oC)

20.2

26.4

29.8

32.7

35.7

37.8

39.1

38.9

38.6

34.3

29.3

22.5

Humidity

monthly mean hunidity

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Hunidity (%)

76

74

74

73

73

78

80

80

78

76

74

73

Hunidity (%)

76

74

74

73

73

78

80

80

78

76

74

73

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

fig.3 monthly mean hunidity

monthly minimum daily hunidity

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Hunidity(%)

11

11

8

15

12

17

35

30

20

16

11

10

Precipitation

monthly mean precipitation

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Precipitation(mm)

35.9

50.4

77.7

78.9

94.9

155.2

161.8

119.6

74.6

69.2

52.9

24.1

Days (Precipitation<0.1mm)

8

8.5

12.2

10.6

10.7

11.2

12.1

10

8.8

8.7

7.6

5.4

Days (Precipitation<10mm)

1.1

1.7

2.7

2.5

2.9

4.3

4.3

3.2

2.2

2.2

1.9

.7

Days (Precipitation<25mm)

.1

.2

.5

.9

.8

2

2.2

1.6

.8

.7

.5

.1

Days (Precipitation<50mm)

0

0

0

.1

.4

.6

.9

.6

.2

.1

0

0

Precipitation (mm)

35.9

50.4

77.7

78.9

94.9

155.2

161.8

119.6

74.6

69.2

52.9

24.1

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

fig.4 monthly mean precipitation

monthly maximum daily precipitation

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Precipitation(mm)

39.7

35

92

60.7

108.1

238.4

111

129.6

109.6

99.8

52.3

39.5

Wind

monthly mean wind speed

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Wind Speed(m/s)

2.7

2.8

3.2

3.2

3.1

2.9

3

2.8

2.5

2.5

2.7

2.6

Wind Speed (m/s)

2.7

2.8

3.2

3.2

3.1

2.9

3

2.8

2.5

2.5

2.7

2.6

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

fig.5 monthly mean wind speed

monthly maximum daily
wind speed and direction

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Wind Speed (m/s)

15

15

17

20

18

19

17.3

16.7

14.7

17.7

16.3

15.7

Sunshine

monthly mean sunshine duration

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Duration (hour)

121.6

114.5

128.7

163.2

188

171.4

196.7

203.2

157

161.4

152.7

143.9

Duration (hour)

121.6

114.5

128.7

163.2

188

171.4

196.7

203.2

157

161.4

152.7

143.9

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

fig.5 monthly mean sunshine duration

monthly sunshine percentage

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Percentage (%)

38

37

35

42

44

41

46

50

43

46

48

46

Remarks:
Weather forecast is provided by China Meteorological Administration.
Climate information is based on monthly averages for 30-year period of 1971-2000.
Precipitation includes both rain and snow.